KR20170000938U - Magnetic Switch - Google Patents
Magnetic Switch Download PDFInfo
- Publication number
- KR20170000938U KR20170000938U KR2020150005899U KR20150005899U KR20170000938U KR 20170000938 U KR20170000938 U KR 20170000938U KR 2020150005899 U KR2020150005899 U KR 2020150005899U KR 20150005899 U KR20150005899 U KR 20150005899U KR 20170000938 U KR20170000938 U KR 20170000938U
- Authority
- KR
- South Korea
- Prior art keywords
- movable
- core
- movable core
- electromagnetic switch
- return spring
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
The present invention relates to an electromagnetic switch, and more particularly, to an electromagnetic switch having an improved operating voltage by increasing a contact area between a fixed core and a movable core.
According to an embodiment of the present invention, an electromagnetic switch includes: a coil connected to a power source; A fixed core magnetized by a magnetic field generated around the coil when the power source is applied; A movable core capable of being attracted by a magnetic force generated in the fixed core; A movable shaft coupled to the movable core and moving together with the movable core, and connected to the movable contact at an upper end; A cylinder installed to surround the fixed core and the movable core; And a return spring installed between the lower end of the movable core and the bottom surface of the cylinder and returning the movable core to the original position when the power is interrupted.
Description
BACKGROUND OF THE
Generally, a magnetic switch (also referred to as an electromagnetic contactor or a direct current relay) is a kind of an electric circuit switching device which transmits a mechanical signal and a current signal using the principle of an electromagnet , Various industrial facilities, machines and vehicles.
Particularly, electric vehicle relays are located in the battery system of electric vehicles such as hybrid vehicles (HYBRID), fuel cell cars, golf carts and electric forklifts, and serve to open and close the main current.
FIG. 1 is a longitudinal sectional view of an electromagnetic switch according to the prior art, and FIG. 2 is a top view of the movable core in FIG.
An electromagnetic contactor for an electric vehicle includes an
That is, when a power is supplied to the
As described above, there is a return spring 9 in the electromagnetic switch for assisting return of the movable core 7 when the electromagnetic switch is turned off. The return spring 9 prevents an erroneous operation (unwanted on operation) caused by an external shock in the off state, and determines the shutoff performance by determining the off operation time. However, since the mounting position of the return spring 9 is located between the
That is, in the electromagnetic switch according to the related art, as the return spring 9 is positioned between the
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide an electromagnetic switch that improves the operation performance by providing a return spring under the movable core to increase the contact area between the fixed core and the movable core.
According to an embodiment of the present invention, an electromagnetic switch includes: a coil connected to a power source; A fixed core magnetized by a magnetic field generated around the coil when the power source is applied; A movable core capable of being attracted by a magnetic force generated in the fixed core; A movable shaft coupled to the movable core and moving together with the movable core, and connected to the movable contact at an upper end; A cylinder installed to surround the fixed core and the movable core; And a return spring installed between the lower end of the movable core and the bottom surface of the cylinder and returning the movable core to the original position when the power is interrupted.
Here, the return spring is a tension coil spring.
In addition, a seating part capable of providing a lower end of the return spring is formed on a bottom surface of the cylinder.
A first protrusion is formed on an inner circumferential surface of the seating part to fix a lower end of the return spring.
In addition, a fixing means is provided on a lower surface of the movable core to fix the upper end of the return spring.
Further, the fixing means is constituted by a stationary ring.
Further, a through hole is formed in the bottom surface of the cylinder.
In addition, a cap inserted into the through hole is provided.
A second protrusion is formed on the inner circumferential surface of the cap to fix the lower end of the return spring.
According to an embodiment of the present invention, since the return spring is provided at the lower portion of the movable core, the insertion groove formed in the conventional movable core and the fixed core is removed, thereby increasing the contact area between the movable core and the fixed core. . Thus, the operation performance is improved.
In addition, the engagement surface between the movable core and the movable shaft is increased to improve the coupling force, and the linearity is improved during the ascending / descending motion.
1 is a longitudinal sectional view of an electromagnetic switch according to the prior art.
Fig. 2 is a top view of the movable core in Fig. 1. Fig.
3 is a longitudinal sectional view of an electromagnetic switch according to an embodiment of the present invention. off state.
FIG. 4 is a longitudinal sectional view of an electromagnetic switch according to an embodiment of the present invention during on operation. FIG.
5 is a detailed view of the lower portion of the cylinder in Fig.
6 is a detailed view of a lower portion of a cylinder of an electromagnetic switch according to another embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to illustrate the present invention in such a manner that a person skilled in the art can easily carry out the present invention. And does not mean that the technical idea and category of the design is limited.
3 and 4 are longitudinal cross-sectional views of an electromagnetic switch according to an embodiment of the present invention. FIG. 3 shows an off state, and FIG. 4 shows an on state. 5 is a detailed view of the lower portion of the cylinder in Fig. The electromagnetic switch according to one embodiment of the present invention will be described in detail with reference to the drawings.
The electromagnetic switch according to an embodiment of the present invention includes a
An arc chamber (10) is provided in the upper part of the electromagnetic switch for extinguishing an arc generated when the contact part is cut off. The
The
The
The arc chamber plate (13) is coupled to the lower portion of the arc chamber (10).
A
A sealing member (14) is coupled between the arc chamber (10) and the plate (16). The sealing
A
As a result, the
The actuator is a driving device that generates a driving force by a magnetic force and drives the
A
The
The
The
The
The insertion groove for installing the return spring, which is provided in the conventional art, is removed from the fixed
The
The above-described actuator is not limited to this configuration, and may be any structure that allows the
Referring to Fig. 5, a
A seating
A
The lower surface of the
In other words, the
Since the
In addition, the engagement surface between the
6 shows an electromagnetic switch according to another embodiment of the present invention.
In this embodiment, a through
A
Since the
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the technical idea of the present invention, and the scope of technical idea of the present invention is not limited by these embodiments. That is, the scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are within the scope of the same should be interpreted as being included in the scope of the present invention.
10
12
14 sealing
16
21
30
40
45
47
65
67
69 Through-
71
73 Second protrusion
Claims (9)
A fixed core magnetized by a magnetic field generated around the coil when the power source is applied;
A movable core capable of being attracted by a magnetic force generated in the fixed core;
A movable shaft coupled to the movable core to move together and having an upper end connected to the movable contact;
A cylinder installed to surround the fixed core and the movable core; And
And a return spring installed between a lower end of the movable core and a bottom surface of the cylinder to return the movable core to an original position when power is interrupted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2020150005899U KR20170000938U (en) | 2015-09-03 | 2015-09-03 | Magnetic Switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2020150005899U KR20170000938U (en) | 2015-09-03 | 2015-09-03 | Magnetic Switch |
Publications (1)
Publication Number | Publication Date |
---|---|
KR20170000938U true KR20170000938U (en) | 2017-03-13 |
Family
ID=58412559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2020150005899U KR20170000938U (en) | 2015-09-03 | 2015-09-03 | Magnetic Switch |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR20170000938U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108682597A (en) * | 2018-05-31 | 2018-10-19 | 厦门宏发汽车电子有限公司 | A kind of miniaturized relays can anti-soft flocks pollution quiet spring plug-in mounting structure |
US11804723B2 (en) | 2018-11-08 | 2023-10-31 | Lg Energy Solution, Ltd. | Relay switch device for turning on/off high current of battery pack |
-
2015
- 2015-09-03 KR KR2020150005899U patent/KR20170000938U/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108682597A (en) * | 2018-05-31 | 2018-10-19 | 厦门宏发汽车电子有限公司 | A kind of miniaturized relays can anti-soft flocks pollution quiet spring plug-in mounting structure |
CN108682597B (en) * | 2018-05-31 | 2023-11-24 | 厦门宏发汽车电子有限公司 | Static spring plug-in mounting structure capable of resisting filth pollution of miniaturized relay |
US11804723B2 (en) | 2018-11-08 | 2023-10-31 | Lg Energy Solution, Ltd. | Relay switch device for turning on/off high current of battery pack |
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